Archery sight



July 21, 1970 A. J. DUPLECHIN ,5

' ARCHERY SIGHT Filed July 25, 1968 2 Shets-Sheet 1 INVENTOR ARMOND J.DUPLEC IN 335M771; w" 2'32 ATTORNEY y 1970 A. JIDUPLECHIN 3,521,362

ARCHERY SIGHT Filed July 25, 1968 r v 2 Sheets-Sheet INVENTOR ARMOND J.DU PLECHIN I ATTORNEY United States Patent O U.S. CI. 3346 ClaimsABSTRACT OF THE DISCLOSURE An archery sight including a vertical base,mounted on the forward face of a bow above the handgrip, a ball sightextending laterally from the base and adjustable therealong, and a sightplate, slidable along the base with the ball sight, and comprising agradated dial, defining varying target distances, a pointer for thedial, and a pivoting mirror, geared to the pointer and pivotally mountedalong its lower base edge so that the tip of an arrow, when the bow isdrawn, will be reflected in the mirror precisely along the base line ofthe mirror thereby enhancing accuracy of the bow.

BACKGROUND OF THE INVENTION The invention rleates generally to the artof bow sights and more particularly presents a solution to the difiicultproblem of providing means that will assure that the bow is drawn inprecisely the same manner each time an arrow is fired to enhance theaccuracy of the bow.

Several bow sights in the prior art are relevant but, significantly, arenot directed to this problem. The most pertinent is U.S. Pat. No.2,001,470, issued to Yngve J. Nyvall, which discloses a collapsible bowand a sight therefor comprising dual mirrors including gradated mirror Fwhich reflects a target from minor G. By squaring the target centrallyin mirror F, the target will be precisely struck by the arrow. However,no allowance is made for the disposition of the arrow immediately priorto shootmg.

The bowsight of U.S. Pat. No. 2,642,661, issued to Bert E. Frederickson,is designed in a manner similar to that disclosed in the Nyvall patent,save that a single transparent reflector is used to reflect a rectile55, and the bow is tilted up or down for distance. Again, no provisionis made for checking the position of the arrow.

U.S. Pat. No. 2,400.973, issued to Charles A. Diehr and U.S. Pat. No.3,120,322, issued to Fred B. Bear discloses a slidable ball sight and amovable transparent sight, respectively Neither patent discusses theproblem of proper arrow placement.

The instant invention discloses a bow sight including a ball sight aswell as a mirror arrangement which assures that each arrow is drawn toprecisely the same point each time an arrow is shot so that bowstringtension is uniform from shot to shot, thereby assuring greater accuracyto the flight of each of a succession of arrows.

SUMMARY OF THE INVENTION The heart of the invention is a pivoting mirrorarrow check means in combination with a movable ball sight for a bowwhich includes a mirror having a bottom lateral edge precisely alignedwith the pivot point of the mirror. Regardless of distance, an arrow isdrawn so that its tip appears along the line defined by the mirrorbottom edge each time the arrow is fired. Pivoting of the mirror isaccomplished by a dial mechanism which is keyed to a distance scale,target to bow.

BRIEF DESCRIPTION OF THE DRAWINGS Details of construction and operationaccording to the prefered embodiment of the invention may be had by icereference to the following specification and accompanying drawings inwhich:

FIG. 1 is a'side elevational view of the invention mounted on a bow,which is partially shown;

FIG. 2 is a rear elevational view of the invention, showing the sameused in sighting a target and an arrow P;

FIG. 3 is a partial elevational view of the invention, taken from theleft side of FIG. 1, and drawn to an enlarged scale;

FIG. 4 is a front, elevational view of the invention as shown in FIG. 3;

FIG. 5 is a front, elevational view of the vertical calibrated base ofthe invention; and

FIG. 6 is a schematic view of the invention in use, showing lines ofsight from arrow to target.

DESCRIPTION OF THE PREFERRED EMBODIMENT Turning now to the drawingswherein parts are indicated by reference character, there is shown a bow10 including handgrip 12 and upper bow limb 14. The invention or sight16 is mounted on back 18 of how 10 and includes a mounting base 20 whichmay be screwed, or otherwise suitably attached, to back 18. A verticalbase 22 is secured to mounting base 20, in either a static or sliding(not shown) relationship as desired.

The face of vertical base 22 is adapted to be pencil gradated forvarying target distances by the archer. Such gradations are shown inFIG. 5 by reference numeral 24. Gradations for distance depend on suchvariables as bow size, strength, and length, as well as targetenvironment conditions and physical characteristics of the archer. Asliding sight base 26 includes an ordinary ball sight 28 extendinglaterally therefrom, above arrowrest 30 (FIG. 2). Base 26 is slid up ordown vertical base 22 as test arows are shot until the target issuccessfully and successively hit when ball sight 28 is lined up withtarget center 32 (FIG. .2). At that time, a pencil or pen line 24 may bescribed across the face of vertical base 22. If desired, a thumbsorew 33may be provided, threaded through sight base 26, to lock base 26 firmlyon vertical base 22 (FIG. 1). This is repeated each time the targetdistance is changed.

The remainder of the invention concerns the means for accomplishingconsistent arrow placement for each shot. A sight plate 34 extendsoutwardly from an edge of sight base 26 and includes a series ofcalibrations 36 scribed about a semicircular forward edge portion 38thereof, which marks conform to target distances varying from near atthe bottom of the scale to far at the upper end thereof. A dial pointer40 is mounted centrally through plate 34 and includes a thumb screw 42to adjust the pointer 40. A spur gear 44 is located beneath pointer 40and is geared to a gear segment 46, which in turn is pivotally mountedon sight plate 34 at 48. Extended laterally from pivot point 48 is anarrow sighting mirror 50, the baseline 52 of which is coincident withthe pivot point 48 of gear segment 46.

The operation of this portion of the invention is best indicated byFIGS. 2 and 5. Ball sight 28 is set as hereinbefore indicated. Thenpointer 40 is rotated to the proper target distance as indicated on thescale 36. Rotation of pointer 40 will cause rotation of mirror 50through gear 44 and gear segment 46. Of course, baseline 52 will remainstatic regardless of target distance, in that it is coincident withmirror pivot point 48. But the mirror must be rotated as target distancechanges so that arrow tip 54 will be in full view.

Each time the bow is drawn, once the sight has been properly adjusted,bowstring 56 should be drawn so that arrow tip 54 appears preciselyalong mirror baseline 52. In this manner, consistent tension ofbowstring 56 is assured each time an arrow is shot, thereby enhanc ingaccuracy of each shot in a series. The proper dual lines of sight areindicated by FIG. 6; sightline 58 proceeds from the eye through ballsight 28 to the target center, while sightline 60 goes from the eye tomirror 50 and arrow tip 54.

I claim:

1. In an archery bow including upper and lower bow limbs, a bowstring,an arrow rest, and a handgrip between the limbs, an archery sightcomprising:

(a) a sight base secured to the back of a bow;

(b) a ball sight, extending laterally from the sight base;

and

(c) arrow sight means, including:

(1) a sight plate, extending forwardly from the sight base and having asemicircular forward edge portion;

(2) means defining a calibrated scale about said forward edge portion;defining varying target distances;

(3) a mirror, pivotally mounted on the sight plate rearwardly of thescale along a lateral baseline of said mirror;

(4) means for rotating said mirror according to varying target distancesdefined by said scale; and

(5) means for vertically adjusting said mirror;

whereby the angle of said mirror with respect to a horizontal planedrawn through said mirror baseline may be adjusted to varying targetdistances so that a tip of an arrow may be seen on said mirror baselinewhen a bowstring is fully drawn and the mirror is adjusted angularly incorrelation with the vertical adjustment of the mirror.

4 2. The archery sight as recited in claim 1 wherein said sight basecomprises:

(a) a mounting block, firmly secured to the bow back; (b) a verticalbase member on the block having gradations thereon scribed to varyingtarget distances; and (c) an arrow sight base for said arrow sightmeans. 3. The archery sight as recited in claim 2 wherein said means forvertically adjusting said mirror comprises means for slidably adjustingsaid arrow sight base along said vertical base member.

4. The archery sight as recited in claim 1 wherein said means defining acalibrated scale further comprises: (a) a dial pointer, pivotallymounted centrally of said sight plate; and (b) thumb screw means,attached to said pointer, for

rotation thereof. 5. The archery sight as recited in claim 1 whereinsaid means for rotating said mirror comprises:

(a) a spur gear, mounted centrally of the sight plate; (b) a gearsegment, cooperating with the spur gear, and pivotally mounted on thesight plate along an axis coincident with the mirror lateral baseline.

References Cited UNITED STATES PATENTS 3,302,292 2/1967 Akin 3346.43,355,809 12/1967 Guyton 3346.4

0 ANTON O. OECHSLE, Primary Examiner W. R. BROWNE, Assistant ExaminerUS. Cl. X.R. 124-23

